MultiMC is a free, open source launcher for Minecraft, managed by @Forkk13, @peterixxx, and @drayshak. It allows you to have multiple, separate instances of Minecraft (each with their own mods, texture packs, saves, etc) and helps you manage them and their associated options with a simple interface.

If you'd like to link to MultiMC somewhere, please post a link to multimc.org, rather than this forum post. Thanks.

I've been trying to do this can you tell me step by step how and the code to do it? I never can seem to get mine to work :I

javaw -Xmx1G -Xms1G -jar "C:(location of minecraft)"

change the 1g on both xmx and xms to what ever you want, it is gigs make shure they are the same though or it wont work

and its a .bat file so make a txt file, put ur stuff in and save it as whatever you want with .bat at the end and make it all files not txt files and your good, justr open minecraft with this and leave it open